This Choke Tube Has Been specially Designed To Produce The Best patterns When Shooting WinchesteríS Long Beard Turkey Loads. This Ammunition features Shot-Lok Technology That Allows For The tightest patterns And Longer Downrange Reach Over Any Lead Turkey Load On The Market. Pair This AmmunitioníS capabilities With The CarlsoníS Long Beard Turkey Choke And You Have a Devastating, Gobbler-Killing Combination. Ported For Reduced Recoil And Muzzle Jump, With a Blued, Non-Reflective Finish.Manufacturer: Carlson'sModel: 70130